https://disco.crm.dynamics.com/<OrganizationName> where OrganizationName is a placeholder for the actual ID of your organization.

In my case it was https://disco.crm.dynamics.com/<OrganizationName> easy enough right, cut and paste and replace the <OrganizationName> with the unique OrganizationName> from settings and away we go.

Except our CRM deployment is on crm5.dynamics.com and yours may be hosted on a different sub-domain. It’s very easy to miss when you’re in cruise control mode doing setup tasks.

In my example the address would be: https://disco.crm5.dynamics.com/<OrganizationName>

Make sure you double check your settings at:

Settings | Customizations | Developer Resources

Update: Some have asked why there are numbers on the end for the CRM sub domain. This is used to denote the region that the CRM instance is running at, ie: CRM (North America) CRM4 (EMEA) CRM5 (APAC) etc. The following MSDN article has more details.